Study on Wave-absorbing Properties of Layer-by-layer Distributed Composite Thermal Insulation Materials with Different Contents of SmFeN/YSZ
The rapid development of radar detection technology has put forward higher requirements for the wave-absorbing properties of thermal components such as engines.The commonly used thermal insulation material yttria-stabilized zirconia oxy-gen(YSZ)does not have wave-absorbing property,and it is currently used to add wave-absorbing agent in the thermal insula-tion material to realize its stealth from radar.Based on that,we adopt the additive manufacturing technology to lamellarly distrib-ute the lasamarium iron nitrogen(SmFeN)wave-absorbing agent with different mass ratios and heat-insulating coating material YSZ composites to construct a SmFeN/YSZ composite interface model,whose phase interface perpendicular to the incident elec-tromagnetic wave.The results show that when the SmFeN metal particles and YSZ powders are hierarchically stacked in different ratios,the YSZ/SmFeN heterogeneous interfaces can improve the microwave absorption properties.When the mass ratio of YSZ to SmFeN is 1∶1,the minimum reflection loss value is-54.498 dB and the maximum effective absorption bandwidth is 2.5 GHz.
NETL
NSTL
万方数据
